County · Minnesota
Olmsted County, Minnesota: drinking water records
This overview covers 12 ZIP codes and 22 community water systems in Olmsted County. It also stands in for 4 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Rochester MN1550010 | 123,624 | 1,800 | 1 | 0 | 7 ppb |
| Stewartville MN1550026 | 6,850 | 120 | 0 | 0 | 3 ppb |
| Byron MN1550001 | 6,809 | 120 | 0 | 0 | 2 ppb |
| Sherwood Forest Mobile Estates OK2005532 | 172 | 0 | 0 | 1 | 0 ppb |
| Hilltop Estates MHP WI6560140 | 64 | 0 | 0 | 1 | 0 ppb |
| Eyota MN1550006 | 2,043 | 0 | 0 | 0 | 1 ppb |
| Oronoco MN1550036 | 2,040 | 0 | 0 | 0 | 2 ppb |
| Dover MN1550004 | 792 | 0 | 0 | 0 | 1 ppb |
| Chester Heights MN1550020 | 300 | 0 | 0 | 0 | 5 ppb |
| Zumbro Ridge Estates MN1550003 | 270 | 0 | 0 | 0 | 0 ppb |
| Hallmark Terrace Mobile Home Park MN1550029 | 170 | 0 | 0 | 0 | 0 ppb |
| Sandy Slopes Community MN1550027 | 158 | 0 | 0 | 0 | 0 ppb |
| Country Cove Court LLC WI6560125 | 150 | 0 | 0 | 0 | 3.0 ppb |
| Meadowbrook Addition MN1550021 | 125 | 0 | 0 | 0 | 2 ppb |
| Briarwood Subdivision MN1550035 | 90 | 0 | 0 | 0 | 1 ppb |
| Rolling Hills MHP LLC WI6560143 | 90 | 0 | 0 | 0 | 0 ppb |
| Country View Holdings LLC WI6560136 | 75 | 0 | 0 | 0 | 11.5 ppb |
| Chosen Valley Mobile Home Park MN1550005 | 73 | 0 | 0 | 0 | 1 ppb |
| Clearwater Well Company MN1550009 | 65 | 0 | 0 | 0 | 2 ppb |
| Country Home Trailer Park MN1550002 | 56 | 0 | 0 | 0 | 0 ppb |
| Sunrise Mobile Home Park MN1550016 | 50 | 0 | 0 | 0 | 7 ppb |
| Kings Park - Hyland Addition MN1550031 | 40 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Olmsted County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 55904, 55929, 55934, 55960.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.